The Transportation Research Board's (TRB) 2010 Environment and Energy Workshop: Better Delivery of Better Solutions, which will be held June 6-10, 2010 in Raleigh, North Carolina, will commence with a session to discuss research needs in the workshop's focus area topics: climate change, sustainability, energy, and livability. These four topic areas play an important role in shaping and delivering transportation solutions for the future. The four white papers included in this document are intended to inform the opening session by providing a synthesis representing views from select TRB Committees regarding ongoing and completed research related to the workshop's focus topics and future research needs in those cross-cutting topic areas. This is a compilation only and is to be used as a tool for further discussions.